This is a reproduction of a post I wrote a few years ago about a cronox 2 patch I like...

" Pick a saw wav on OSC 1, with OSC 2 off and the mix (obviously) on all the way to the left. Set the symmetry wherever it sounds nice to you (I frequently find myself wandering around the 10 O'clock zone), then don't let any unfiltered noise through (TRACK to %100), no filter envelope (DEPTH to %0), and decay time and sustain volume all the way up. Also, attack all the way down, and just the teensiest release you can imagine. For weirdo-crazy-person-ultra-doom bass, set the filter cutoff low (around 300Hz). for more generally ripping bass, set the cutoff higher. In my experience, it is best not to endow the filter with too much resonance... most of the time, no resonance will do nicely

Since the decay parameter on the amp envelope is set all the way up, the midi note length will entirely determine the length of the note played. With the sustain volume all the way up, the bass loses a lot of its potential dynamics (except the teensiest bit at the end!), but it really makes up for the loss with growling, bad-ass, loud-as-balls, textured delight. Also, if you're anything like me, you will not have much use for intra-note dynamics while you're blasting away at the back wall of your studio at 160+ bpm. At fast speeds, I think it's okay to take dynamic cues from the space between bass notes rather than the beautifully crafted shape hidden within your 1/20th of a second of bass (which is about all you get at 160 bpm with 32nd note bass on 16th note intervals).

A mildly interesting sidenote: 160 bpm means that each beat (which is a quarter note in the psytrance meter ) last for 3/8ths of a second. so, your 32nd note is only 3/64ths ( or, a little under 1/20th ) of a second long. this means at 160 bpm, if you render a 32nd note of 64Hz anything and look at it in a sample editor, you will see exactly three cycles of whatever waveform you chose to play. Wild, huh?

More interestingly, with this bass, you will need a HARD kick. I'm serious.

After all the fun choosing a kick sample, eqing it, and sometimes maximizing it (yeah, I said it), apply a sidechain compressor to keep the bass on the 2nd 16th note of whatever beat from summing too irresponsibly with the tail end of your extremely low pitched (and therefore very long) kick.
"

Nowadays, since I'm on an intel mac so there's no cronox 2 for me...

luckily, I sampled the crap out of cronox 2 grabbing super long notes with the filter wide open so I can load them into Kontakt and use the filter and envelopes in there! It's a fun thing to do, and I'll make a video on it in a little bit!